I've never owned a laptop before, so I am not too familiar with the whole battery thing. I will be using my mbp at home 90% of the time, and I am wondering how I should run it to make the best use/long-term conservation of battery power. Should I: - Always leave it plugged in? - Charge it fully, unplug it and run it on battery until it's fully drained and repeat? - Something different entirely?